* {
	/* 页面初始化 清除元素的内外边距 */
	padding: 0;
	margin: 0;
}
body {
	/* 宽度占浏览器可视区域的高度 */
	width: 100vm;
	background-color: #f2f2f2;
}
li {
	/* 清除li元素前面的项目符号 */
	list-style: none;
}
a {
	/* 清除a元素的下划线 */
	text-decoration: none;
	color: #000;
}


    .container {
      background: #fff;
      border-radius: 5px;
      box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
      max-width: 500px;
      margin: 50px auto;
      overflow: hidden;
    }

    .container h2 {
      font-size: 28px;
      font-weight: bold;
      color: #333;
      text-align: center;
      margin-top: 20px;
    }

    .container form {
      width: 93%;
      padding: 20px;
    }

    .container form label {
      font-weight: bold;
      font-size: 18px;
      display: block;
      margin-bottom: 8px;
      color: #666;
    }

    .container form input[type=text],
    .container form input[type=password] {
      border: none;
      border-radius: 5px;
      font-size: 16px;
      padding: 15px;
      width: 93%;
      margin-bottom: 10px;
      box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
    }

    .container form input[type="submit"] {
      background: #0099ff;
      color: #fff;
      border: none;
      border-radius: 5px;
      font-size: 18px;
      padding: 15px 30px;
      cursor: pointer;
      transition: background 0.3s ease-in-out;
      margin-top: 20px;
      width: 100%;
      display: block;
    }

    .container form input[type="submit"]:hover {
      background: #0077cc;
    }
.container form select {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  font-weight: 400;
  color: #333;
  line-height: 1.3;
  width: 100%;
  height: 50px;
  margin: 20px 0;
  padding: 10px 35px 10px 20px;
  background-color: #fff;
  background-image: url(https://img.icons8.com/ios-filled/10/000000/chevron-down.png);
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 10px 10px;
  border: 2px solid #c2c2c2;
  border-radius: 5px;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  cursor: pointer;
}

.container form select:focus {
  outline: none;
  background-color: #fff;
  box-shadow: 0 0 4px 0 rgba(0, 0, 0, 0.1);
}

.container form select option {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  font-weight: 400;
  color: #333;
  line-height: 1.3;
  background-color: #fff;
  cursor: pointer;
  transition: all 0.3s ease;
}

.container form select option:hover {
  color: #fff;
  background-color: #2a9fd6;
}